Resilient connection for brake rods and the like



G. B. DOREY 2,461,633

RESILIENT CONNECTION FOR BRAKE RODS AND THE LIKE Feb. 15, 1949.

Filed March 17, 1945 //v VEN TOR I I Patented Feb. 15, 1949 RESILIENT' ONNECTION FORHBRAKE RODS THE "GeorgcrB; Darcy; .Westmomt; Quebec; .v I ApplicafionlMarchsl'i, 1945;,Serial'No'. 5831349 I My invention relates to-an improved type of resihentconnection for incorporation int-he brake riggingcf'railway'cars and-the iike and-is by way of an improvement on my United States Patent No. 2,1'065343 of January 1938-;

object or my invention is to provide a resii'ientextensible connection wherein the parts are maintained in a definite-spaced relation to each otherat ali times so as to prevent interference between the relativelymovable parts "as thecm'inection is 'extendedi Y A particular object of myinvention is to pro vide a structure having apair of clevis members in combination with an" interlocking spacing washer to maintain the pair of jaws-constituting {the clevisin' spaced relation. 1

My 'inve'. t 'on further resides in certain de' tails of construction such as wil-l'b'e fully pointed outh'ereinafter and'cla'imed. i

"For furthercomprehension of my invention referencemay'beh'ad to theaccomparrying draw i-ngs wherein:

"Figure is avertical elevational' view of my. improved resilient connectionshowingthe structure in assembled relation with the centralrod cut away: I

Figure 2'is a vertical'side elevational View of the assembly shown in Figure 1' as'viewed from r i-ght to left;

Figure Bis aton'p-lan view of Fig. 1' showing the rod insection and asviewed on line 3-3' of Fig. 1'. I r t V Figuredis avertical elevational View of one of the clevis piecesshownin Figure 2. a

Figure 5 is aside view ofthe clevi's 'piece shown in" Figure' i. v

Figure 6 is 'atoppian view'of Figure 5'. Figure}? is a plan View ofthe washer: shown in Fig. '3.

Figured isaside view of the washer shown in Figure 7- as viewed from right toleft. I Fig. 9 is aperspectiveview of the centrally dis:- posed-shouldered rod.

Referring now to the drawing, A indicates a cent-rally disposed shoialdered rod movable in one 'dir-ect'ionand' B indicates ayoke structure mor able in the opposite direction from the central rod; said yoke structure includes a pair 'ofclevis pieces C-C,.a washer D interlocked with the clevispiecesand a separator- E' interposed between; thepair oflcl-evispieces and secured thereto by a n'VetLR. interposed between the shoni dertofsthercentrallrod andthe was-her D is a coil spring; I 'Thewcentrally disposed shouldered-: memberfn portion it is formed with curved sidcwahs i=1 toconform to thecurved inner'surface" l 5 o'f-"the inside "face ofthe" coil spring and the *b'ody- "per; tion of said headis preferahlyof 1' section de finedhy web lfi -andsi'de'wall-s "ll.

Thebodyportionoitheheadat an appreciable distance from the shoulder is formed oneach side with' aiiat bearing, surface iB, said surfaces constitutingi'bearnlg' walls whichact to guide the central member between theinnerhearing sur faces oi the jaw pieces.

' Disposed at the sides of the central memberarethe clevis pieces" 'C-C.' "Each clevispiece includes a shankportion 1'9 rying within the spring G; said portion having; an outer curved surface 25' corresponding tothe inner face of the spring and an" innerfiat'wali 2 i, said iast named wall constituting a guiding wall for one oftheb'earing surface 18"-ofthe central member. Each clevis; member is, provided with: a shouldered "portion 22" projecting; outwardly "b'e yond'the 'shankand laterally to the sides to provide projecting end portions 23. "The end walls of. the projecting portions 23 are indicated at 24 and extend. substantially radially from the axial center of the spring on lines as indicated at, '25.. The, shouldered portion 22 is tapered slightly, to. present an inclined bearingsurfaceon its lower face as "indicated'atlfi.

. Each, clevis member onthe end opposltetc the shouldered portion is extended. lengthwise beyond the spring and-there formed with an. enlarged portion 21 whereby the pair of spacedmembers present;a-;cle is likeystructnrehaving transversely aligned: openings indicated at 2B and 2-9 respec;- tively. Edie-respectiveaclevis portions are-spaced.

apart a suflicient distance to accommodate a lever or other suitable member between the jaws offthe connectionandthe parts are maintained in. such spaced relation by -'suitabl-e spacing means as "will be dizscribedhereinaiter.

The spacing means at one end of the spring consist of the separator E which is maintained in place by the rivet F and the" spacing means at the opposite end is carried-outby "the washerifi 3 through its interlocking relation with the shouldered portions of the clevis pieces.

Said washer D includes a fiat ring shaped body portion 30 having a circular opening 3| corresponding substantially to the shape of the inside of the spring. The under surface 32 of the body of the washer consists of a flat surface which bears on the end of the spring. Extending outwardly from the body portion of the'washer are projecting walls-33 each having end walls 34 extending in a substantially radial direction from the axial center of the spring on lines indicated at 35. The body portion of the washer on its upper surface presents seats 36 for receiving the shouldered portions of the clevis pieces. Said seats 36 incline radially at a slight angle towards the center of the washer, said inclination corresponding substantially to the inclination formed by the tapered bearing portion of the clevis shoulder which has the inclined surface 26. The seats 36 in combination with the end walls 34 thus present pockets in which the shouldered portions of the clevis pieces are received and held in interlocked relation. The fact that the bearing seats 36 incline towards each other has the efiect of forcing the respective clevis pieces inwardly towards each other thus causing the end walls 24 of the clevis pieces to bear against the radially extending walls 34 of the washer. The interlocking relation between the clevis pieces and the washer thusmaintains the shanks of the jaw pieces against lateral or sideways displacement and outward movement of said shanks is further prevented by reason of the fact that the ring shaped body portion of the washer encircles the shanks of the clevis pieces.

The inner face of the ring shaped washer lies immediately adjacent to the outer curved surface of the shanks of the clevis pieces and this further serves to center the washer in relation to the coil spring. The combination of the pair of clevis pieces and the associated spacing means adjacent the opposite ends of the spring provides a yoke structure having the rigidity of an integral member and assures through the medium of the washer for an even bearing on the end of the spring. The coil spring is placed under initial compression when the parts are assembled and thus all the parts of the connection are firmly held in position. The enlarged clevis portions 21 which lie beyond the spring are generally formed of greater width thanthe. inside diameter of the spring and consequently when assembling the device it is necessary that the clevis membersbe individually threaded through the spring. In order to permit of assembly the shouldered ends 22 of the clevis pieces are so formed and proportioned as to readily pass through the spring and ring shaped washer.

With the yoke structure in assembled relation it will be seen that the inner flat faces 2| of the pair of clevis pieces present parallel guiding walls between which the central rod is contained and guided. The flat bearin surfaces IS on the central rod provide for adequate support inthe event that the connection is used in a horizontal positionI While I have shown a preferred embodiment of my invention it will be understood that the same is merely illustrative and I contemplate all modifications coming within the scope of the appended claims.

What I claim is: 1

l. A resilient extensible connection comprising oppositely movable shouldered means and a coil spring interposed betweenlthe shoulders of the respective movable means; onefoi said shouldered means consisting of a centrally disposed member extendin through the spring and the other of said shouldered means being in the form of a yoke assembly including a pair of clevis members and a'washer; said pair of clevis members being spaced apart to accommodate the central membertherebetween and said washer being interlocked with the clevis members to maintain said pair of clevismembers in spaced relation, said washer including a ring shaped body portion seating on the spring and oppositely disposed notches formed in said ring to present end wall abutments and a seat between said abutments, said clevis members presenting laterally extending shoulders formed with end walls arranged to register with the end walls of the notches,,each said shoulder having a seating surface extendin between the end walls for seating upon the seat of the associated notch.

2 A: resilient extensible connection comprising oppositely disposed shouldered means movable relatively to each other and arcoil spring interposed between the shoulders of the respective means; one of said shouldered means including a pair of shouldered clevis members spaced apart and the other of said shouldered means includin a centrally disposed member extending between the pair of clevis members; and a washer interposed between the shoulders of the clevis members and theadjacent end of the spring, said washer having abutments associated therewith engaging with the shouldered portion of the clevis members to maintain said pair of members in spaced relation, .said abutments of the washer presenting Walls extending lengthwise of the connection and angularly related to present outwardly flaring V arranged end walls forming notches for the accommodation of the shoulder of the clevis therein, said shouldered portions of the respective clevis members being formed with outwardly V arranged end walls for engagement with the end walls of the notches of the washer. V

3. As an article of manufacture, a resilient extensible connection including oppositely disposed relatively movable shouldered members and a coil spring interposed between the shoulders of the respective members; one of said members extending centrally through the spring and the other of said members including apair of shouldered clevis members each disposed on opposite sides of the central member; and a washer having a body portion interposed between 'the shoulders of the clevis members and one end of the spring, said washer having abutments outstanding from the body portion, said abutments extending sub stantially radially relatively to the axial center of the spring, and abutments on the shoulders of the clevis members engaging with the first named abutments, said co-operating abutments operating to maintain the clevis members in definite spaced relation.

4. As an article of manufacture, a resilient extensible connection including a coil spring and oppositely movable shouldered elements embracing the opposite ends of said spring; one of said elements extending centrally through the spring and the other of said elements bein in the form of a yoke assembly including a pair of shoulan outer surface concentrically formed to corre-v spond with the inner face of the spring and having a flat inner face constituting a guiding wall for the centrally extending member; said bearing washer having a ring shaped body portion en'- circling the shank portions of the'pair of clevis pieces, said body portion of the washer being interposed between the shoulders of the clevis pieces and the adjacent end of the spring, said washer having seats for receiving the shoulders 10 of said clevis pieces and abutments at each end of the seats outstanding from the body portion of the washer, said abutments extending between the pair of clevis pieces to maintain the same in definite spaced relation, said shoulder receiving seats on the washer being slightly inclined downwardly towards the abutments to maintain the clevis pieces in engagement with the abutments when longitudinally acting tensional pressure is applied on the connection. GEORGE B. DOREY.

REFERENCES CITED The following references are of record in the file of this patent: 

